pipets used for the transfer of samples of solutions are always rinsed with a small portion of the solution to be dispensed with the pipette before the actual sample of secant calculate the percentage error likely to arise in an experiment if 1 mL 5 mL in 10 mL pipets are used for transfer and each pipet contains five jobs of liquid at hearing to the inside of the barrel assume a volume of about 0.95 per drop

What type of reaction is zn + cucl2 → cu + zncl2?

Can someone me with questions 12 and 13 plz.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.